An experiment with batch runs containing SVM regression cannot be paused

[swinkler]

To reproduce this do the following: Create an experiment with batch runs, each containing a SVM solving a regression problem; press start; press pause, and then the execution is not paused.

[mkommend]

This issue is related to ticket #1573. The reason for this is that SVM algorithms cannot be pause and the execution state of batch runs is only paused if the nested optimizer is paused (the same holds for experiments). Therefore experiments and batch runs containing SVM algorithms are executed until they are finished.

[mkommend]

r6767: Decoupled execution states of Experiment and BatchRun with the nested optimizers.

[gkronber]

reviewed r6767